70265664 has 224 divisors, whose sum is σ = 244002560. Its totient is φ = 19408896.

The previous prime is 70265609. The next prime is 70265669. The reversal of 70265664 is 46656207.

70265664 is a `hidden beast` number, since 70 + 26 + 566 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70265669) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 447474 + ... + 447630.

Almost surely, 2^70265664 is an apocalyptic number.

70265664 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70265664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122001280).

70265664 is an abundant number, since it is smaller than the sum of its proper divisors (173736896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70265664 is a wasteful number, since it uses less digits than its factorization.

70265664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 70265664 is about 8382.4616909354. The cubic root of 70265664 is about 412.6492418658.

It can be divided in two parts, 702 and 65664, that added together give a palindrome (66366).

The spelling of 70265664 in words is "seventy million, two hundred sixty-five thousand, six hundred sixty-four".